Posted by Thomas Jacobson on Tuesday, 22 June 2010, at 2:52 p.m., in response to 1873 - 1884 mismatch, posted by Bill DiBenedetto on Tuesday, 22 June 2010, at 1:00 p.m.

I can't help you with ID'ing your rifle, others here will. However, using X's as part of a serial number will get little in return. Since you legally purchased the rifle, you do not need to use X's here.